diff -r 170d9f615c3e vcl/source/window/accmgr.cxx
--- a/vcl/source/window/accmgr.cxx	Wed Oct 28 10:10:41 2009 +0000
+++ b/vcl/source/window/accmgr.cxx	Thu Oct 29 12:30:32 2009 +0000
@@ -83,6 +83,23 @@
     if ( !mpAccelList )
         return;
 
+    //e.g. #i90599#. Someone starts typing a sequence in a dialog, but doesn't
+    //end it, and then closes the dialog, deleting the accelerators. So if
+    //we're removing an accelerator that a sub-accelerator which is in the
+    //sequence list, throw away the entire sequence 
+    if ( mpSequenceList )
+    {
+        for (USHORT i = 0; i < pAccel->GetItemCount(); ++i)
+        {
+            Accelerator* pSubAccel = pAccel->GetAccel(pAccel->GetItemId(i));
+            if ( mpSequenceList->GetPos( pSubAccel ) != LIST_ENTRY_NOTFOUND )
+            {
+                EndSequence( true );
+                break;
+            }
+        }
+    }
+
     // Raus damit
     mpAccelList->Remove( pAccel );
 }